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sladkih [1.3K]
3 years ago
6

Water contained in a reservoir is controlled by a dam. The energy of the trapped water is

Chemistry
1 answer:
Lana71 [14]3 years ago
6 0
Another example of potential energy.
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A student weighed out a 2.055 g sample of a cobalt chloride hydrate, ConClmpH2O, where n, m, and p are integer values to be dete
topjm [15]

The given mass of cobalt chloride hydrate = 2.055 g

A sample of cobalt chloride hydrate was heated to drive off waters of hydration and the anhydrate was weighed.

The mass of anhydrous cobalt chloride = 1.121 g anhydrate.

The mass of water lost during heating = 2.055 g - 1.121 g = 0.934 g

Converting mass of water of hydration present in the hydrate to moles using molar mass:

Mass of water = 0.934 g

Molar mass of water = 18.0 g/mol

Moles of water = 0.934 g * \frac{1 molH_{2}O }{18 g H_{2}O } =0.0519 mol H_{2}O

8 0
3 years ago
Which reaction can be used to make 2,3 dichloropentane?
lina2011 [118]

Answer:

B) substitution

Explanation:

2,3 dichloropentane is a hydrocarbon that contains two chlorine atoms in its chain. It has a chemical formula: C_{5} H_{10} Cl_{2}. In the compound, two hydrogen atoms has been substituted by two chlorine atoms.

A substitution reaction is a process by which an atom of a compound is being replaced by another atom to form a new compound due to a chemical reaction. This is one of the general properties of alkanes.

4 0
3 years ago
Haw many H atom in tow H2O molecules
allochka39001 [22]
Two hydrogen and two oxygen multiply for two
7 0
2 years ago
Answer the boxes in the image
pochemuha

Answer: the c thingy is where you be like burgundy sauce then be like racial slair is what it mean's so the name thingy

Explanation:

7 0
3 years ago
The element oxygen has _____ valence electrons. (Input only a whole number, such as 7.)
kipiarov [429]
Remark
The short Answer is 6. That's why the ion has a charge of minus 2. Oxygen is doing it's best to have its outer ring have 8 electrons which is the number of outer electrons contained in the outer ring of the Noble Gas Neon.

Answer 6.
8 0
3 years ago
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